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Finding the Third Proportional to 311,928 and 470,104

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Solution

The third proportional to 311,928 and 470,104 is: 708,489.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,928 : 470,104 = 470,104 : x
  2. Step 2: Convert to fraction form
    311,928/470,104 = 470,104/x
  3. Step 3: Cross multiply
    311,928x = 470,104 × 470,104
  4. Step 4: Simplify right side
    311,928x = 220,997,770,816
  5. Step 5: Solve for x
    x = 220,997,770,816/311,928
  6. Step 6: Final answer
    x = 708,489.69

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.